Visit a world not our own, but strangely familiar, a world of heroes and villains, of wonders and dangers, and limitless adventure! The Atlas of Earth-Prime is a trip around the world of the Freedom City and Emerald City settings for the Mutants & Masterminds Superhero RPG, looking at different regions and their heroes, villains, features, and opportunities, giving you a whole world to explore for your game. All for less than the cost of a new comic book!

The Atlas begins close to "home" with the nation with the two largest centers of super-powered activity. But Freedom City and Emerald City are not the only places of note in the United States: visit the super-prison Lockdown in Buckner Ridge, TN, or the mystic bayous of Embouchere, LA. Learn about the heroes of New York, Chicago, or San Francisco, or go beyond the ordinary in Midvale, KS, Mystery, NH, or Red Rocks, AZ, located near Magic Mesa. Help clean up the mean streets of Ferroberg, PA, or the halls of power in Washington DC.